[ GLSA 200510-01 ] gtkdiskfree: Insecure temporary file creation

[GLSA]

Gentoo Linux Security Advisory

Title: gtkdiskfree: Insecure temporary file creation (GLSA 200510-01)
Severity: normal
Exploitable: local
Date: October 03, 2005
Bug(s): #104565
ID: 200510-01

Synopsis

gtkdiskfree is vulnerable to symlink attacks, potentially allowing a local user to overwrite arbitrary files.

Background

gtkdiskfree is a GTK-based GUI to show free disk space.

Affected Packages

Package: app-admin/gtkdiskfree
Vulnerable: < 1.9.3-r1
Unaffected: >= 1.9.3-r1
Architectures: All supported architectures


Description

Eric Romang discovered that gtkdiskfree insecurely creates a predictable temporary file to handle command output.

Impact

A local attacker could create a symbolic link in the temporary files directory, pointing to a valid file somewhere on the filesystem. When gtkdiskfree is executed, this would result in the file being overwritten with the rights of the user running the application.

Workaround

There is no known workaround at this time.

Resolution

All gtkdiskfree users should upgrade to the latest version: